>>35473784The way I see it, salamence is an iconic and beloved gen 3 mon, so of course it was getting a mega. They also considered to continue bagon's dream of being able to fly, so they wanted to give it more flying STAB to play with. The team at GF looked at mence from every angle and said "how the fuck do we add 100 to its BST without breaking it?" Salamence has excellent mixed offenses, solid speed, decent bulk, and a good movepool aside from flying type moves, including recovery. If they made it fully defensive it'd be an unbeatable tank. Make it a special attacker so it can't get stronk with DD, it'd still demolish shit with fire blast, draco, etc. Make it fast, it'd be a god-tier revenge killer with its offenses.
Compare this to garchomp. Garchomp doesn't get dragon dance, so its above-average base speed was a crucial part of why it was so good. Take away some points from that and put them anywhere else and boom, not broken.
Let's look at what mega salamence changed from the base form:
>+10 attacklol
>+50 DEFENSEholy shit
>+10 special attackwow
>+10 special defenseok
>+20 speedNow do you understand?
Eventually they realized there was just no way to buff salamence that much without breaking it, and just said "fuck it" and made mega mence.